regulator: twl-regulator: make TWL4030_ALLOW_UNSUPPORTED more configurable.
The regulators in the twl4030 can provide some voltage settings
that are not offically supported.
These settings are disabled by default, but can be enabled with
CONFIG_TWL4030_ALLOW_UNSUPPORTED=y
However
- that config variable is not mentioned in any Kconfig so cannot
be used, and
- a global setting is clumsy - a per regulator setting would be
better.
So define a new 'feature' flag that a board file can set to enable
these unsupported volatages for boards which need them.
This flag cannot (yet) be set using device-tree.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h
index 18fc937..c1be3db 100644
--- a/include/linux/i2c/twl.h
+++ b/include/linux/i2c/twl.h
@@ -762,6 +762,11 @@
#define TWL5031 BIT(2) /* twl5031 has different registers */
#define TWL6030_CLASS BIT(3) /* TWL6030 class */
#define TWL6025_SUBCLASS BIT(4) /* TWL6025 has changed registers */
+#define TWL4030_ALLOW_UNSUPPORTED BIT(5) /* Some voltages are possible
+ * but not officially supported.
+ * This flag is necessary to
+ * enable them.
+ */
/*----------------------------------------------------------------------*/